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net: busy-poll: remove need_resched() from sk_can_busy_loop()

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Now sk_busy_loop() can schedule by itself, we can remove
need_resched() check from sk_can_busy_loop()

Also add a const to its struct sock parameter.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Adam Belay <abelay@google.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Yuval Mintz <Yuval.Mintz@cavium.com>
Cc: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2016-11-15 10:15:12 -08:00 committed by David S. Miller
parent 217f697436
commit 21cb84c48c
1 changed files with 2 additions and 3 deletions
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5
include/net/busy_poll.h
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@ -58,10 +58,9 @@ static inline unsigned long busy_loop_end_time(void)
return busy_loop_us_clock() + ACCESS_ONCE(sysctl_net_busy_poll);
}
static inline bool sk_can_busy_loop(struct sock *sk)
static inline bool sk_can_busy_loop(const struct sock *sk)
{
return sk->sk_ll_usec && sk->sk_napi_id &&
!need_resched() && !signal_pending(current);
return sk->sk_ll_usec && sk->sk_napi_id && !signal_pending(current);
}